Thanks for the explanation. I thought the Sky box used virtually as much juice when in standby as when switched fully on. I believe it uses much more in standby than does the Humax Foxsat .
I wonder why so many upgrades are necessary?
Traditionally as the tuner was left active to receive over the air data all the time then when in standby only the video output stage was switched off. Since then the drive status has changed to be spun down in standby and some models also turn off tuner2 again decreasing the standby power usage.
I can't give you any figures, they have never interested me enough to find out given I could probably save a significant amount if everything but the alarm clock (and you could replace that with a windup) went "dead" everynight. I also use the DVR option to record a lot of stuff overnight freeing up primetime for the rest of the family and of course I rate Anytime content very highly.
Major firmware changes tend to happen in batches, there can be months separating significant changes however EPG and other info can be sent at anytime of the day and night.